Site 404 and admin page not loading

[SB Lite]

Hi,

 

Anyone got any ideas why my sites not working? I cant log into the admin pages and the main page is just loading a 404 error. 

 

Seems like its some re-direct issue?

 

http://www.sblite.co.uk/

http://www.sblite.co.uk/admin250

 

 

Any help would be brilliant.

 

Thanks